haskellPackages.simple 1.0.0 -> 2.0.0 https://repology.org/project/haskell:simple/versions
attrpath: haskellPackages.simple
Checking auto update branch...
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There might already be an open PR for this update:
- Frozen haskellPackages set for 21.05 to ease backporting bug fix releases
  URL "https://api.github.com/repos/NixOS/nixpkgs/issues/138407"